CBR ITB SETUP Need Instructions
Bump for getting my manifold welded today. I'll have pix up this sunday. Looks sooo tight. Ill be welding the ITBS to the manifold and the Velocity stacks to the itbs.
LOL...I forgot to take some last time I was at the shop. I haven't been ablt to get the itbs welded up yet. I've kinda been focusing on my head and getting it built but the first chance I get I will post some stuff. Sorry dude.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turtlecx92 »</TD></TR><TR><TD CLASS="quote">one of the best ways ive seen air directed into the itb, was on a drag only civic at englishtown, somehow the guy built a box completely surrounding the intakes, and it had foam surrounding the top edges so when the hood was closed no air from the engine bay was able to get in there, and on the hood the guy had a wrx or sti style hood scoop directing fresh air straight into the throttle bodies, it seemed kinda stupid with the giant scoop, but very functional at the same time, love it or hate it, it had to have worked
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saw the same car. think it was a blue hatch. very finctional.
to him. did look kinda out of place though.
</TD></TR></TABLE>saw the same car. think it was a blue hatch. very finctional.
to him. did look kinda out of place though.
hey guys, just trying to keep this thread alive... got a little tech thing that i've had great luck with and not seen anyone else do yet. I know most people are jb welding the original cycle injector bungs closed, or placing a nipple in one(for the brake booster) and then plugging the other three. Here's what I've done on some of my setups I've made which allows you to play around with injector location down the road for better atomization due to the fact that stock injectors(car or bike) still fit in after this modification is done. All I did was tap the holes with a 1/8"NPT tap and thread some 1/4" (larger)nipples in there for a stronger vaccum source. Basically what this does is allow you to run four separate nipples directly to a separate canister/distribution block for the brakes so that your map doesn't change drastically when you apply your brakes. 1/8" Plugs can also be placed in there if you don't need the extra nipples. And after it's been tapped the stock injectors still slide in there perfect! I then leave the stock CBR vaccum line routing for the map sensor(all four cylinders) and fuel pressure regulator (2cylinders).


Using the old CBR injector location for nipples is exactly what I did. I used some JB weld and the nipples like yours does. It looks good. i'm still waiting for my manifold to get back. i had it powder coated Black for some sleeperness. We'll see how it turns out. I didn't feel comfortable using the CBR Inj. locations because of how we're using a rubber cuplink (sp) and the fuel would collect in the cracks. So using the original locations on the B series Manifold is essential. looking good so far.
AS SOON as I get my stuff together i'll post picks. I just have lots going on with my project, school and work. I know you guys want to see it.
AS SOON as I get my stuff together i'll post picks. I just have lots going on with my project, school and work. I know you guys want to see it.
More pix of a project that is taking WAY to long. The powder coating place dropped my manifold and cracked a bunch of the welds. It must have happened while in the oven. Oh well, I'm going to get one of those crappy log style manifolds off of ebay. Heres the pix. I'm having trouble loading pix so the just click on the links. They should take you to some pix
Here is the peice that connects the throttle rotors.

Here are the itbs at wot.

Heres the bar that I weld to the shaft of the butterflies. And the nipples coming out of the injector bosses which will give more vacuum.

and another pic

Modified by nathan atwell at 1:44 AM 7/16/2004
Here is the peice that connects the throttle rotors.

Here are the itbs at wot.

Heres the bar that I weld to the shaft of the butterflies. And the nipples coming out of the injector bosses which will give more vacuum.

and another pic

Modified by nathan atwell at 1:44 AM 7/16/2004
I think taping the injector bosses would have been cleaner looking but I did it this way so, whatever. I had them flow tested and they flow with .002 cfm. So I hope that doesn't affect part throttle too much.
Modified by nathan atwell at 11:45 AM 7/13/2004
Modified by nathan atwell at 11:45 AM 7/13/2004
I mistakenly thought that i could erase my pix from imagestation but...you can't erase them and have them posted on another web site...I will have the pix back up this weekend. <-- ****
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 90blackcrx »</TD></TR><TR><TD CLASS="quote">

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sorry if i missed it it's really late. but what throttle bodies is this a pic of. actually my main concern is where you bought the velocity stacks from. thanks.

</TD></TR></TABLE>sorry if i missed it it's really late. but what throttle bodies is this a pic of. actually my main concern is where you bought the velocity stacks from. thanks.
Any local honda motorcycle shop can order them. here is a good place to find the part numbers or order if you don't have a local honda.
http://www.ronayers.com/fiche/getdesc.cfm?man=ho
http://www.ronayers.com/fiche/getdesc.cfm?man=ho
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nathan atwell »</TD></TR><TR><TD CLASS="quote">Here was my previous post:
here are some pix.
This is what they looked like before the machine shop.

Here they are after.

In this photo it shows the rough look of how I removed the factory airbox mounting and how they are spaced out.

Here is the fabricated bar that will support most of the weight of the ITBS.

Here they are with a rough idea of how the will look.

Almost finished.

Here is a shot next to the head. They look off but they are precisely spaced. I mounted them on a manifold to space them out. The picture wouldn't load, though.


Once again, they are ALMOST done. They still need some things done but I wanted to post what I had. This part of it took along time, all of Sunday to be exact. They open like they did before they were cut and they are perfectly aligned. I am not happy with the "clamp" that is holding the shafts of the butterflies but I will find some later this week. I looking for something like the seat clamps on bicycles, something like that. I am fabricating a bar that will open the throttle body springs this coming weekend. They look alright for now.Wish me luck.
Modified by nathan atwell at 9:37 PM 5/31/2004
Modified by nathan atwell at 9:49 PM 5/31/2004
Modified by nathan atwell at 9:50 PM 5/31/2004</TD></TR></TABLE>
i would love to see this whole post in its entirety. can you please get these pics up. thanks.
here are some pix.
This is what they looked like before the machine shop.
Here they are after.
In this photo it shows the rough look of how I removed the factory airbox mounting and how they are spaced out.
Here is the fabricated bar that will support most of the weight of the ITBS.
Here they are with a rough idea of how the will look.

Almost finished.

Here is a shot next to the head. They look off but they are precisely spaced. I mounted them on a manifold to space them out. The picture wouldn't load, though.


Once again, they are ALMOST done. They still need some things done but I wanted to post what I had. This part of it took along time, all of Sunday to be exact. They open like they did before they were cut and they are perfectly aligned. I am not happy with the "clamp" that is holding the shafts of the butterflies but I will find some later this week. I looking for something like the seat clamps on bicycles, something like that. I am fabricating a bar that will open the throttle body springs this coming weekend. They look alright for now.Wish me luck.
Modified by nathan atwell at 9:37 PM 5/31/2004
Modified by nathan atwell at 9:49 PM 5/31/2004
Modified by nathan atwell at 9:50 PM 5/31/2004</TD></TR></TABLE>
i would love to see this whole post in its entirety. can you please get these pics up. thanks.
Well, completed my fourth set so far. They are the 954rr 42mm's and will be going on my b20z/vtec. They definately came out better than the other sets i've done, everything lined up perfect. I used some really nice 2" silicone couplers that I found pre-cut in lengths of 3" and comes with hoseclamps rather than some hacked up radiator hose. Here's some pics, I just have to cut the runners about 1" shorter and it's finished. Filters should be here today!


Modified by RenoRacing at 1:16 PM 9/7/2004


Modified by RenoRacing at 1:16 PM 9/7/2004
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